by Mike Everhart (Author)
More terrifying than anything known to humankind, it scarcely seems possible that these swift, massive underwater predators actually existed, but they did-and this is their frightening, fascinating, unforgettable story.
Format: Hardcover
Pages: 192
Publisher: National Geographic Society
Published: 31 Oct 2007
ISBN 10: 1426200854
ISBN 13: 9781426200854